I think the description and test suite on this problem is slightly off. When I see 'union' I already assume that no duplicates are permitted and order is irrelevant.
02 - Vector Variables 1
03 - Matrix Variables 1
Area of an equilateral triangle
Skip by a multiple
Replace every 3rd element in a vector with 4
execute the declaration in strings and return value
most frequent character
Sum of odd numbers in a matrix
interesting center of magic matrix
index of n^2 in magic(n)
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